Looks to me like a T-mount.
Gregg
Michael Stephens asked:
| This adapter came with an OM-4 that I purchased. Looks like ti might
be for
| a microscope or telescope? There are threads, and an connection pin
that
| sets the aperture inside the camera as "open". Sorry for the rotten
photos
| and scans (I gave up my macro lens...).
|
| http://www.flash.net/~mike1964/OMring.jpg
| http://www.flash.net/~mike1964/OMring2.jpg
|
| Thanks,
| Mike
|
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